CN105025527A - Methods and apparatus of adapting number of advertised transmit antenna ports - Google Patents

Methods and apparatus of adapting number of advertised transmit antenna ports Download PDF

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Publication number
CN105025527A
CN105025527A CN201510422887.8A CN201510422887A CN105025527A CN 105025527 A CN105025527 A CN 105025527A CN 201510422887 A CN201510422887 A CN 201510422887A CN 105025527 A CN105025527 A CN 105025527A
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China
Prior art keywords
antenna port
fashioned
old
run
reference signal
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Granted
Application number
CN201510422887.8A
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Chinese (zh)
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CN105025527B (en
Inventor
J·蒙托霍
K·巴塔德
A·法拉吉达纳
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Qualcomm Inc
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Qualcomm Inc
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Publication of CN105025527B publication Critical patent/CN105025527B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Abstract

Systems and methodologies of intelligently selecting and advertising antenna ports to UEs (e.g., advertising a number of antenna ports to legacy UEs, and another number of antenna ports to new UEs). Such adaptive feature in adjusting the number of antenna ports, enables the base station(s) to intelligently balance requirements of legacy UEs and new UEs (e.g., LTE-A) for an overall efficient operation of the wireless system take as a whole - (e.g., performance gain for new users is deemed an offset for performance degradation for legacy users.) Accordingly, resources that are typically reserved for a Reference Signal (RS) associated with an antenna port, can be freed when such antenna ports are not advertised to the UEs as part of wireless system operation.

Description

Make the adaptive method and apparatus of transmitting antenna port number of notice
The application is application number is 200980133575.8 (PCT/US2009/055217), the applying date is on August 27th, 2009, and denomination of invention is the divisional application of the Chinese patent application of " the adaptive method and apparatus of transmitting antenna port number making notice ".
Priority is required based on 35 U.S.C. § 119
Patent application claims is that submit on August 28th, 2008, name is called the provisional application No.61/092 of " ADAPTINGNUMBER OF ADVERTISED TRANSMIT ANTENNAS ", the priority of 450, this provisional application has transferred the assignee of the application, therefore with way of reference, it is incorporated to the application clearly.
Technical field
Put it briefly, the present invention relates to radio communication, more particularly, relate to and make number of transmit antennas self adaptation according to the demand of user in a wireless communication system.
Background technology
In order to provide various Content of Communication (such as, sound, data etc.), widespread deployment wireless communication system.Typical wireless communication system can be can by sharing free system resources (such as, bandwidth sum transmitting power ...) support the multi-address system with multiple telex network.The example of this kind of multi-address system comprises code division multiple access (CDMA) system, time division multiple access (TDMA) system, frequency division multiple access (FDMA) system, OFDM (OFDMA) system etc.In addition, these systems can meet the specification of such as third generation partner program (3GPP), 3GPP Long Term Evolution (LTE), Ultra-Mobile Broadband (UMB) and so on and/or the multi-carrier-wave wireless specification of such as evolution data optimization (EV-DO) and its one or more revision versions and so on.
Usually, wireless multiple-access communication system can support the communication of multiple mobile device simultaneously.Each mobile device is communicated with one or more base station with the transmission on reverse link by forward link.Forward link (or down link) refers to the communication link from base station to mobile device, and reverse link (or up link) refers to the communication link from mobile device to base station.In addition, single-input single-output (SISO) system, multiple input single output (MISO) system, multiple-input and multiple-output (MIMO) system etc. can be passed through and set up communication between mobile device and base station.In addition, in equity (peer-to-peer) wireless network architecture, mobile device can communicate with other mobile device (and/or base station and other base station).
Mimo system uses multiple (N tindividual) transmitting antenna and multiple (N rindividual) reception antenna carries out data communication.Can by by N tindividual transmitting antenna and N rthe mimo channel that individual reception antenna is formed is decomposed into N sindividual independent channel, these independent channels also can be called space channel, wherein N s≤ min{N t, N r.N seach in individual independent channel corresponds to a dimension.If employ the additional dimension produced by multiple transmitting antenna and multiple reception antenna, then mimo system can provide the performance of improvement (such as, higher throughput and/or higher reliability).
Mimo system supports time division duplex (TDD) system and Frequency Division Duplexing (FDD) (FDD) system.In a tdd system, forward link transmissions and rl transmission in identical frequency domain, thus by principle of reciprocity, can estimate forward link channel according to reverse chain channel.Make like this when multiple antenna is when access point is available, this access point can extract the transmit beam-forming gain on forward link.
In addition, currently considering that some improve for senior LTE (LTE advanced) system, such as: the Femto cell of multiuser MIMO, high-order mimo (there is 8 transmitting antennas and reception antenna), network MIMO, restricted association, the picocell, larger bandwidth etc. of scope expansion.Senior LTE must support old-fashioned UE (LTE version 8UE), and provides extra characteristic to new-type UE (also having old-fashioned UE when possible time) simultaneously.But, support that the complete characteristic in LTE can design the constraint of making troubles to senior LTE, and possible gain can be limited.Usually, any this characteristic should be thought on the impact of new-type UE.
Summary of the invention
Provide the brief overview to one or more aspect below, to provide the basic comprehension to these aspects.This general introduction is not the summary general to whole contemplated aspects, is not intended to identify the key of whole aspect or critical elements yet or describes the scope of any or whole aspect.Its object is only, as hereinafter provided preamble in greater detail, to provide some concepts of one or more aspect in simplified form.
According to the disclosure of one or more embodiment and correspondence thereof, the antenna port number self adaptation noticed in conjunction with making base station is in a wireless communication system to describe various aspects.Determine this adaptive characteristic during antenna port number, make base station can in order to the overall Effec-tive Function of considered as a whole wireless system, intelligently balance old-fashioned UE and new-type UE (such as, LTE-A) demand (such as, the performance boost of new user being considered as the compensation of the hydraulic performance decline to legacy subscriber).This adaptive characteristic comprises and is used for the number that old-fashioned UE ran and be used for the antenna port that new-type UE runs is set to different values by configured.Then, the number that can configure antenna port to using for old-fashioned UE use and new-type UE is noticed.In one aspect, by first reducing the antenna port number being advertised to old-fashioned UE, the resource that the reference signal (RS) that can be released to legacy subscriber retains, to be used by new-type UE.Therefore, it is possible to legacy subscriber be cost to improve the performance of new user, this can provide between old-fashioned UE in a wireless communication system and the operation of new-type UE and seamlessly transit.
This innovation concept with usually require low initial treatment expense and to carry out the market forces of design system contrary by supposing only to exist old-fashioned UE (such as, noticing antenna port number, to strengthen the performance of retrospective installation).But, by noticing antenna port number selected by system requirements can be adjusted to adaptively, the windfall effect of effective use whole system resource can be obtained in the system with old-fashioned UE and new-type UE.When not noticed as the part that wireless system runs to UE by the antenna port be associated, this programme can discharge the resource being generally the reference signal (RS) that is associated with antenna and retaining.According to a specific aspect, existing mechanism can be used (such as, PBCH by LTE) notice a transmitting antenna port number to old-fashioned UE, and notice a larger transmitting antenna port number by another kind of mechanism (such as, by the system information block-SIB in LTE-A) to new-type UE.
In a kind of relevant method, available subscribers in wireless system and their relevant information can be determined in base station.These information can be based on collected data, and the data of described collection are about the type (such as, old-fashioned, LTE-A) of: user; The number of users of every type, to the relative position of base station, based on the estimated performance of given antenna port number, the type of institute's exchange message/data, every type of Qos; The rx antenna number of UE or the ability of UE etc.Then according to the information that these are collected, base station can by (such as, for legacy subscriber) that such as calculate or determine to notice via the mode of inference and so on the antenna port number for above-mentioned available subscribers.Inference can also be probabilistic, namely according to the consideration of data and event to the calculating of the probability distribution of paid close attention to state.Inference also can refer to the technology for forming more advanced event according to one group of event and/or data.When user enters or leaves wireless network and/or changes when demand, noticed antenna port number can be changed, so that adaptive system demand.Subsequently, (such as, paging, is circulated a notice of by server) available antenna port number can be circulated a notice of to user.According to specific aspect, the method comprises and first arranging in wireless communication system for transmitting antenna port number that legacy subscriber equipment (UE) runs, subsequently, arrange and be used for the different antennae port number that in wireless communication system, new-type UE runs, and notice the transmitting antenna port run for old-fashioned UE and the antenna port run for new-type UE in a wireless communication system.In relevant example, this announcement operations occurs via Common Control Channel and/or via the Physical Broadcast Channel (PBCH) in Long Term Evolution (LTE).In addition, the data of each in old-fashioned UE and new-type UE can send via the antenna port corresponding with it.
Relate to a kind of radio communication device on the other hand.This radio communication device comprises at least one processor.This at least one processor can be configured for and make base station can determine noticed antenna port number.In addition, this at least one processor can be configured for and make the number of these antenna port be adapted to system requirements, such as notices an antenna port number to old-fashioned UE, and notices another antenna port number to new-type UE.Such as, first system can notice 4 antennas, but even whole 8 available antennas can be used for old-fashioned UE subsequently.Like this, this at least one processor according to the overall Effec-tive Function of considered as a whole wireless system, can notice an antenna port determined and/or select to UE.
Relate to a kind of communicator on the other hand.This radio communication device can comprise the module for determining noticed antenna port number, and this module makes base station can determine the antenna port number that will notice.In addition, this radio communication device can comprise for making above-mentioned antenna port number be adaptive to the module of system requirements.
Relate to a kind of computer program on the other hand, this computer program can comprise computer-readable medium.This computer-readable medium can comprise the code for making computer determine noticed antenna port number.This computer-readable medium can also comprise the code for making antenna port be adaptive to this demand when system requirements change in time.Adaptive characteristic when this codes implement determines noticed antenna port number also enables base station in order to be considered the overall Effec-tive Function of overall wireless system, intelligently balance old-fashioned UE and new-type UE (such as, LTE-A) demand (such as, the performance gain of new user being considered as the skew of the performance degradation of legacy subscriber).
For realizing above-mentioned and relevant object, will fully describe below one or more aspect comprises and each feature of indicating of emphasis in the claims.Description below and accompanying drawing set forth in detail some illustrative features of above-mentioned one or more aspect.But these features only illustrate some distinct methods of the general principle that can adopt various aspects, following description is intended to comprise all these aspects and equivalent thereof.
Accompanying drawing explanation
Fig. 1 shows the wireless communication system consistent with the various aspects of the application.
Fig. 2 shows and consistent with one aspect of the present invention determines antenna port number and the adaptive example system to it for supporting.
Fig. 3 shows the transmitting antenna port number adaptive correlation technique for realize make notice consistent with another aspect of the present invention.
Fig. 4 shows the example communication system for realizing adaptive characteristic when determining antenna port number.
Fig. 5 shows the example wireless communications that can be incorporated to the adaptive characteristic for antenna port selected consistent with an aspect of of the present present invention.
Fig. 6 shows the system for by adjustment antenna port number realized the flexibility of Resources allocation consistent with an aspect of of the present present invention.
Fig. 7 shows and makes the adaptive system of antenna port number for realizing in a wireless communication environment.
Fig. 8 show aspect related to the present invention consistent for making the adaptive ad hoc approach of antenna port number in a communication environment.
Fig. 9 shows the mobile device consistent with another aspect of the present invention.
Figure 10 shows the example wireless communications being configured for and supporting multiple user, can realize the many aspects of antenna self-adaptive in this wireless communication system.
Figure 11 is the block diagram in a communications system make antenna port number adaptive system consistent with the various aspects of the application.
Figure 12 shows consistent with related fields of the present invention making the adaptive other method of antenna port number.
Embodiment
Referring now to accompanying drawing, many aspects are described.In the following description, for ease of explaining, a large amount of detail is given, to provide the complete understanding to one or more aspect.But, clearly, also these aspects can be realized without these details.
Term " assembly " used in this application, " module " are intended to comprise the entity relevant to computer and/or electronic equipment with " system " etc., such as but be not limited to hardware, firmware, the combination of hardware and software, software or executory software.Such as, assembly can be, but is not limited in and is: the thread of the process that processor runs, processor, object, executable program, execution, program and/or computer.For example, the application run on the computing device and computing equipment can be assemblies.One or more assembly can be positioned at executory process and/or thread, and assembly and/or can be distributed at least one computer between two or more platform computers.In addition, these assemblies can be performed by the multiple computer-readable medium it storing plurality of data structures.These assemblies can be undertaken communicating (such as by mode that is local and/or remote process, according to the signal with one or more packet, grouping is wherein such as from the data of an assembly, and this assembly is undertaken in local system, in distributed system and/or by the network of such as the Internet etc. and the assembly of other system by the mode of signal alternately).
In addition, the application describes each side in conjunction with terminal, and terminal can be catv terminal or wireless terminal.Terminal can also be called system, equipment, subscriber unit, subscriber station, mobile radio station, travelling carriage, mobile device, distant station, remote terminal, accesses terminal, user terminal, terminal, communication equipment, user agent, subscriber equipment (user device) or subscriber equipment (user equipment (UE)).Wireless terminal can be cell phone, satellite phone, cordless telephone, Session initiation Protocol (SIP) phone, wireless local loop (WLL) are stood, personal digital assistant (PDA), the portable equipment with wireless connection capability, computing equipment or be connected to other treatment facility of radio modem.In addition, the application also describes various aspects in conjunction with base station.Base station may be used for communicating with wireless terminal, and can be called access point, Node B, evolved node B (Node B, eNB), Femto cell, picocell, Microcell, macrocell, Home evolved Node B (HeNB), home node-b (HNB) or certain other term.
In addition, term " or " mean comprising property " or " instead of exclusive " or ".That is, unless otherwise, or can know from context and learn, otherwise " X uses A or B " be meant to the arrangement of any naturally comprising property.That is, X uses A, X to use B, or X uses A and B any one situation wherein to meet " X uses A or B ".In addition, can know to learn it is singulative unless otherwise indicated or from context, otherwise the article " a " used in the application and claims part and " an " ordinary representation " one or more ".
Technology described in the application may be used for various wireless communication system, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), OFDM (OFDMA) and Single Carrier-Frequency Division multiplexing (SC-FDMA) and other system.Term " system " and " network " often can exchange use.Cdma system can realize the wireless technology of such as general land wireless access (UTRA), CDMA2000 etc. and so on.UTRA comprises other variant of broadband-CDMA (W-CDMA) and CDMA.In addition, CDMA2000 covers IS-2000, IS-95 and IS-856 standard.Tdma system can realize the wireless technology of such as global system for mobile communications (GSM) and so on.OFDMA system can realize the wireless technology of such as evolved UTRA (E-UTRA), Ultra-Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM etc. and so on.UTRA and E-UTRA is a part of Universal Mobile Telecommunications System (UMTS).3GPP Long Term Evolution (LTE) is the released version of the UMTS adopting E-UTRA, and it uses OFDMA on the uplink, and uses SC-FDMA on uplink.UTRA, E-UTRA, UMTS, LTE and GSM is described in the file of the tissue of " third generation partner program " (3GPP) by name.In addition, in the file of the tissue of " third generation partner program 2 " (3GPP2) by name, CDMA2000 and Ultra-Mobile Broadband (UMB) is described.In addition, this wireless communication system also comprises (the peer-to-peer of equity, such as, travelling carriage is to travelling carriage) ad-hoc network (ad hoc network) system (this reciprocity ad-hoc network system uses the frequency of the unlicensed of non-paired usually), 802.xx WLAN, bluetooth and any other short distance or long apart from wireless communication technology.
Single-carrier frequency division multiple access (SC-FDMA) uses single-carrier modulated and frequency domain equalization.SC-FDMA has the performance similar with OFDMA system and substantially identical overall complexity.SC-FDMA signal has lower peak-to-average power ratio (PAPR) due to its single carrier structure in essence.Such as, SC-FDMA can be used in ul transmissions, and in an uplink transmission, lower PAPR is greatly conducive to accessing terminal in transmit power efficiency.Therefore, in 3GPP Long Term Evolution (LTE) or evolved UTRA, SC-FDMA is implemented as uplink multiple access scheme.
Various aspects described by the application and feature can be embodied as method, device or goods by the programming of use standard and/or engineering.The term " goods " used in the application is contained can from the computer program of any computer readable device, carrier or medium access.Such as, computer-readable medium can include but not limited to: magnetic storage apparatus (such as, hard disk, floppy disk, tape etc.), CD (such as, compact disk (CD), Digital Versatile Disc (DVD) etc.), smart card and flash memory device (such as, EPROM, card, rod, key drive etc.).In addition, the various storage mediums described by the application can represent one or more equipment for storing information and/or other machines computer-readable recording medium.Term " machine readable media " includes but not limited to: wireless channel and can store, preserve and/or carry other media various of instruction and/or data.
Fig. 1 shows the wireless communication system 100 consistent with each embodiment of the application.System 100 comprises base station 102, and base station 102 comprises multiple antenna sets.Such as, an antenna sets comprises antenna 104 and 106, and another group comprises antenna 108 and 110, and another group comprises antenna 112 and 114.Although show two antennas for each antenna sets, each group can use more or less antenna.As the skilled personnel can understand, base station 102 also comprises transmitter chain and receiver chain, wherein each chain can comprise the multiple assemblies (such as, processor, modulator, multiplexer, demodulator, demodulation multiplexer, antenna port etc.) be associated with the transmission of signal and reception.
Base station 102 can communicate with one or more mobile devices of mobile device 122 and so on such as mobile device 116; It should be understood, however, that base station 102 can with arbitrary number substantially be similar to mobile device 116 with 122 mobile device communicate.Such as, mobile device 116 with 122 can be: cell phone, smart phone, laptop computer, handheld communication devices, handheld computing device, satellite radio station, global positioning system, PDA and/or any being suitable for carry out by wireless communication system 100 equipment that communicates.As shown in the figure, mobile device 116 communicates with 114 with antenna 112, and wherein information is sent to mobile device 116 by forward link 118 and receives information by reverse link 120 from mobile device 116 by antenna 112 and 114.In addition, mobile device 122 communicates with 106 with antenna 104, and wherein antenna 104 and 106 sends information by forward link 124 to mobile device 122 and receives information by reverse link 126 from mobile device 122.For example, in Frequency Division Duplexing (FDD) (FDD) system, forward link 118 can use the frequency band different from reverse link 120, and forward link 124 can use the frequency band different from reverse link 126.In addition, in time division duplex (TDD) system, forward link 118 and reverse link 120 can use common frequency band, and forward link 124 and reverse link 126 can use common frequency band.
To can often organize antenna and/or it specifies the region that is used for communicating to be called the sector of base station 102.Such as, antenna sets can be designed for and communicate with the mobile device in the sector of the overlay area by base station 102.In communicating on forward link 118 with 124, the transmitting antenna of base station 102 uses beam forming to improve the signal to noise ratio of the forward link 118 and 124 of mobile device 116 and 122.In addition, when base station 102 uses beam forming to send to the mobile device 116 and 122 of random scatter in the coverage be associated, compared with the base station of to carry out to its whole mobile device sending by individual antenna, the mobile device in adjacent cell will be subject to less interference.
It is to be appreciated that base station 102 can be base station (such as, macro cell base station, microcell base station, femtocell base station, the femto cell base station of any type ...).Each mobile device 116,122 can generate the preference selecting respective target BS (such as, base station 102, other type of base station (not shown)).According to an example, mobile device 116,122 can use the various access control mode (mode that mode, user and operator that such as, operator controls control ...).One or more aspect of the present invention makes it possible to the antenna number determining that base station 102 is noticed in a wireless communication system.This adaptive characteristic when determining antenna number makes base station 102 in order to the overall Effec-tive Function of considered as a whole wireless system 100, and can intelligently balance the demand of old-fashioned UE and new-type UE (such as, LTE-A).Such as, the performance boost of new user can be regarded as is the compensation of hydraulic performance decline to legacy subscriber.In one aspect, by first reducing the antenna number noticed to old-fashioned UE, the corresponding resource release that the reference signal (RS) for legacy subscriber can be retained, so that new-type UE uses.Can be that cost is to improve the performance of new user (such as like this with legacy subscriber, with the peak rate of old-fashioned UE for cost improves the peak rate of new-type UE), this can provide and seamlessly transit between the old-fashioned UE of wireless communication system 100 and the operation of new-type UE.As used in this specification, term " antenna " can refer to actual physical antenna.In addition, term " antenna port " refers to virtual-antenna (wave beam formed by using the physical antenna to UE notice), and wherein, wave beam refers to and uses different gains and phase rotating to send identical signal by different antennas.It being understood that for old-fashioned UE, each antenna port can correspond to public reference signal (CRS) port.It is also to be understood that, for example, being arranged to of the noticing antenna port number that old-fashioned UE runs can be used for the transmission of all control channels (public with special) of old-fashioned UE and new-type UE, and the transfer of data of old-fashioned UE and new-type UE then uses the respective antenna port number for it configures.
Fig. 2 shows the wireless communication system 200 consistent with the various aspects that the application describes.System 200 comprises the one or more base stations 202 in one or more sector, and base station 202 is for carrying out receiving wireless communication signals, sending, repeating etc. each other and/or to one or more mobile device 204.Each base station 202 comprises multiple transmitter chain and multiple receiver chain (such as, each transmitting antenna transmitter chain, each reception antenna receiver chain), each transmitter chain and receiver chain comprise multiple assembly (such as, processor, modulator, multiplexer, demodulator, demodulation multiplexer, antenna etc.) be associated with transmission and the reception of signal.Each mobile device 204 comprises one or more transmitter chain and receiver chain, these transmitter chains and receiver chain can be used for multiple-input and multiple-output (MIMO) system.As skilled in the art can understand, each transmitter chain and receiver chain can comprise multiple assembly (such as, processor, modulator, multiplexer, demodulator, demodulation multiplexer, antenna etc.) be associated with transmission and the reception of signal.
When the signal of certain signal format is launched by base station 202 in the another kind of signal format of such as OFDM and so on, the sequential of the sampling of this signal received at mobile device 204 place can turmoil and/or mistake.Therefore, mobile device 204 can be configured for the data after to sampling and rearrange, and abandons the data after the sampling of mistake, to improve the detection to signal.Because there is the dissimilar signal format used, so system 200 can provide one for allowing to adopt the platform of these multiple formats.Therefore, system 200 not uses these forms independently, but optionally superposes these forms.
Base station 202 comprises antenna self-adaptive assembly 214 further, and antenna self-adaptive assembly 214 comprises day line options assembly 210 and adjustment assembly 211, and assembly 210 and 211 co-operate is intelligently to customize antenna port according to system requirements.
It line options assembly 210 for selecting antenna port number, adjustment assembly 211 for increasing/reduce selected antenna port number.Such as, the demand that antenna port number is adjusted to wireless communication system by assembly is adjusted.
This adaptive characteristic during adjustment antenna port number makes base station 202 can in order to the overall Effec-tive Function of considered as a whole wireless system, and intelligently balance old-fashioned UE and new-type UE (such as, LTE-A) demand (such as, the performance boost of new user being considered as the compensation of the hydraulic performance decline to legacy subscriber).In order to the overall Effec-tive Function of wireless communication system, antenna self-adaptive assembly arranges different antenna port numbers adaptively, intelligently to balance the demand between old-fashioned UE and new-type UE.In addition, antenna is noticed assembly 220 and is circulated a notice of available antenna port to user.
In one aspect, by first reducing noticed antenna port number, the respective resources release that the reference signal (RS) for legacy subscriber can be retained, to be used by new-type UE.Therefore, take legacy subscriber as the performance that cost can improve new user, this can provide between old-fashioned UE in a wireless communication system and the operation of new-type UE and seamlessly transit.The concept of this innovation is contrary with usually requiring the market forces of low initial treatment expense.Having been found that by increasing the processing expenditure relevant to the antenna port number (it can adjust according to system requirements adaptively) selected by notice, the unexpected advantage relevant to effective use overall system resources can be obtained.Therefore, not to UE notice using regarding antenna port as wireless system run a part of time, the resource being generally the reference signal (RS) that is associated with antenna and retaining can be discharged.Therefore, antenna notices assembly 220 for noticing antenna port, to adapt to the demand of communication system change.
According to related fields, antenna self-adaptive assembly 214 is arranged the transmitting antenna port number run for the legacy subscriber equipment (UE) in wireless communication system by adjustment assembly 211.This adjustment assembly 211 can also be arranged the different transmit antennas port number run for the new-type UE in wireless communication system, and antenna is noticed assembly 220 and can be noticed subsequently for the antenna port that old-fashioned UE runs and new-type UE runs in wireless communication system.
Specifically, in LTE version 8, notice transmitting antenna port number by Physical Broadcast Channel (PBCH).In addition, in conventional systems, transmitting antenna port number is by attempting carrying out blind decoding and check which kind of possibility works determining to the PBCH for different institute's notice transmitting antenna port numbers simultaneously.In addition, version 8 supports notice 1,2 or 4 transmitting antenna ports.In the standard, the reference signal (RS) corresponding to each noticed transmitting antenna needs to force to send.This operation is needed to be the channel quality needing signals base to observe on different antennae port because of UE.Such as, e Node B (eNodeB) can use channel quality information to make decision to the MIMO scheme being suitable for UE.The number of resources taken by RS can increase along with the increase of noticed antenna port number.Notice more antenna port and will likely provide extra MIMO gain.But the efficiency of system obviously can reduce along with the more RS symbol of transmission.Described below is exemplary situation, wherein notice less antenna port number for legacy subscriber, do the performance improving non-old-fashioned UE and old-fashioned UE like this.
support the more high-order mimo with 8 transmitting antenna ports
In one aspect, the design 2 transmitting antenna ports (being associated with antenna 1 and 2) being advertised to legacy subscriber is considered.Subsequently, new user 8 transmitting antenna ports are informed by new mechanism (such as, by the new system information block SIB in LTE-A).This mechanism is necessary for support 8 transmitting antenna ports, and its reason is in LTE version 8, not support this arrangement at present.
Therefore, the low duty cycle RS of resource (supposing notice 4 antenna ports) for transmitting antenna port 3 to 8 of antenna port 3 and 4 can be originally used for now.Such as, be substituted in the RS of transmitting antenna port 3 and 4 in whole subframe, the present invention realizes: the RS of transmitting antenna 3 and 4 in a subframe; The RS of transmitting antenna port 5 and 6 in next subframe; And in ensuing subframe the RS of transmitting antenna 7 and 8; After this, the RS of transmitting antenna port 3 and 4 again, by that analogy.Like this, old-fashioned UE can not discover new RS transmission, and only runs on 2Tx transmission.In addition, new-type UE observes the RS of at least 4 Tx antennas in each subframe, and therefore, it is possible to supports 4Tx MIMO transmission.In addition, because RS in the cocycle of whole 8 Tx transmitting antennas, therefore even can support the MIMO scheme of nearly 8 Tx antenna participations like this.Therefore, can be come by the 4Tx pattern of sacrificing old-fashioned UE for the support of new-type UE acquisition to 8 transmitting antennas, and can not expense be increased.Other supports that the possibility of 8Tx transmission introduces more for the RS of other antenna (5 to 8), and these RS send together with the RS of antenna 1 to 4.Can expense be increased like this and design poor efficiency can be made and be difficult to realize.
the support of network MIMO
Network MIMO refers to that UE is subject to the assistance of two or more eNB simultaneously in synchronizing network.In order to network enabled MIMO, UE need to estimate the channel from multiple eNB.According to the physical district ID of eNB, the RS potentially conflicting of multiple eNB, and be therefore not enough to estimate the channel for network MIMO object.Therefore, in the obvious situation of network MIMO gain, can only notice one or two transmitting antenna, and send corresponding RS sequence.Like this, the resource of saving by not sending other RS can be used to design the new public RS structure being more suitable for network MIMO object than current RS design.
the situation of remarkable interference
In the network of scope of application expansion/restricted association, usually running into following situation, at this moment requiring that UE is connected to more weak eNB when there is significantly interference.Like this, usually by setting up communication to the division (such as, by splitting subframe between) of resource between remarkable interference with more weak base station.But these base stations all send RS according to the requirement of standard in whole subframes.In the resource sending its RS compared with strong basis station, UE cannot listen to its service eNB, and even in the resource distributing to more weak eNB, UE also possibly cannot listen to its service eNB.Therefore, in this case, carry out self adaptation to noticed antenna number to be good.
For example, if macrocell reduces the antenna port number noticed, then it is increased in the number of resources that can be used for picocell in its coverage.To be become for the resource sending its RS by macrocell and can use for each picocell.If there is the picocell (having the connected picocell of UE) of several activation in the overlay area of macrocell, the total capacity (its reason is that resource can be used by different picocells simultaneously, and therefore, it is possible to compensates the loss that old-fashioned UE occurs due to the MIMO function reduced usually when being connected to macrocell) of system can be increased so significantly.By only sending new RS in the resource retained for macrocell, still can support more for the transmitting antenna of new-type UE.But if there is little activation picocell, then macrocell supports that the 4Tx of old-fashioned UE transmits is feasible.
Therefore, what noticed by PBCH is utilize the performance of other advanced features of LTE-A based on for the MIMO gain of legacy subscriber and new-type UE and old-fashioned UE to the decision-making of the number of transmit antennas for old-fashioned UE.In addition, different transmit antennas number can be noticed, to obtain the MIMO gain for new-type UE to new-type UE.In addition, this decision-making can be carry out adaptive based on current system requirements, and the current structure of network is depended in optimal selection that its reason is (antenna number for noticing old-fashioned UE).Such as, when only occurring old-fashioned UE in the overlay area in base station, 4 antennas can be noticed to old-fashioned UE, and the RS of whole 4 antennas can be sent.
When there is enough few old-fashioned UE, 1 transmitting antenna only can be noticed for old-fashioned UE.Such as, in LTE, one makes the adaptive method of number of transmit antennas be change at eNB place, and then the whole UE of paging is to notify this changing system information to it.The number of transmit antennas for legacy subscriber that the present invention is also noticed by minimizing optimizes the design (such as, the MIMO of 8 × 8) to senior LTE.
Fig. 3 shows for adjusting antenna port number so that the correlation technique 300 of adaptive system demand.Although this illustrative methods described and be depicted as the square frame of the various event of a series of expression and/or action, the present invention is by the restriction of the shown order of these square frames.Such as, according to the present invention, except the order shown in the application, some actions or event can occur by different order and/or occur with other action or event simultaneously.In addition, square frame that the method consistent with the present invention may not need all to illustrate, event or action is realized.In addition, be understandable that, can realize explicitly with the method described with shown in the application according to this illustrative methods of the present invention and other method, also can realize explicitly with other system that is not shown or that describe and device.First, 310, available subscribers in wireless system and their relevant information can be determined in base station.These information can be about: the type of user (such as, old-fashioned, LTE-A); Legacy subscriber number, new number of users (such as, the number of often kind of user type), with the relative position of base station, according to the type of given antenna number, institute's exchange message, Qos and the performance of every type of expecting; Rx antenna number of UE etc.Then according to the information that these are collected, 320, base station is such as by (such as, for legacy subscriber) the antenna port number calculated or determine to notice through the mode of inference and so on.This inference can also be probabilistic, namely based on the calculating of the probability distribution to paid close attention to state to the consideration of data and event.Inference also can refer to the technology for forming more advanced event according to one group of event and/or data.When user enters or leaves wireless network and/or changes when demand, noticed antenna port number can be changed, so that the requirement of adaptive system.Subsequently, system can circulate a notice of (such as, circulating a notice of etc. with paging, the mode circulated a notice of by server) available antenna port number to user.As used in this application like that, term " inference " be often referred to derive according to the one group of observed result obtained by event and/or data or inference system, environment and/or user the process of state.Such as, inference can be used for identify specific environment or operation, or inference also can generate the probability distribution about state.330, antenna port is noticed, 340, can adjust this number when system requirements change.
Fig. 4 shows the example communication system 400 for realizing adaptive characteristic when determining antenna port number.This adaptive characteristic when determining number of antennas makes base station can for the overall Effec-tive Function of considered as a whole wireless system 400, intelligently balance old-fashioned UE and new-type UE (such as, LTE-A) demand (such as, the performance boost of new user being regarded as the compensation of the hydraulic performance decline to legacy subscriber).On the one hand, by first reducing noticed antenna port number, the corresponding resource release that the reference signal (RS) for legacy subscriber can be retained, so that by access point base station (such as, the femto cell base station in network environment ...) dispose new-type UE and use.As shown in Figure 4, system 400 comprises multiple femto cell base station, and these femto cell base stations are also referred to as access point base station, Home evolved Node unit B (HeNB), home node-b unit (HNB), Femto cell etc.Such as, in the corresponding small scale network environment that each femto cell base station (HeNB 410) can be arranged in the residence 430 of such as one or more user and so on, and each femto cell base station can be configured for that service is associated and external mobile device 420.Each HeNB 410 also by DSL router (not shown), or alternatively, is coupled by cable modem (not shown) and the Internet 440 and mobile operator core net 450 mutually.
Although the embodiment that the application describes uses 3GPP technology, but be understandable that, these embodiments are applicable to 3GPP (Rel99, Rel5, Rel6, Rel7) technology, and 3GPP2 (1xRTT, 1xEV-DO Rel0, RevA, RevB) technology and other known and relevant technology.In these embodiments that the application describes, for example, the owner of HeNB 410 can subscribe the Information Mobile Service of the such as 3G Mobile Service and so on provided by mobile operator core network 450, and mobile device 420 can be run in macro-cellular environment by macro cell base station 460, also can run in the small scale network environment of house.Therefore, HeNB 410 can any existing mobile device 420 of backward compatibility.
It is to be appreciated that HeNB 410 comprises CSG HeNB, hybrid HeNB and/or open HeNB.Each HeNB 410 can notice one group of respective antenna port, and can determine the available subscribers in wireless system and their relevant information.These information can be about: the type of user (such as, old-fashioned, LTE-A); The number of every type user, with the relative position of base station, based on the performance of the every type desired by the type of given antenna port number, institute's exchange message, Qos; Rx antenna number of UE etc.Then according to the information that these are collected, base station is by (such as, for legacy subscriber) the antenna port number such as calculated or determine to notice by the mode of inference and so on.This inference can also be probabilistic, namely based on the calculating of the probability distribution to paid close attention to state of carrying out the consideration of data and event.Inference can also refer to the technology for forming more advanced event according to one group of event and/or data.When user enters or leaves wireless network and/or changes when demand, noticed antenna port number can be changed, so that the demand of adaptive system.Subsequently, (such as, paging, circulated a notice of by server) available antenna port number can be circulated a notice of to user.
Fig. 5 shows the example wireless communications 500 that can be incorporated to adaptive characteristic of the present invention.For the sake of simplicity, wireless communication system 500 depicts a base station 510 and a mobile device 550.It is, however, to be understood that system 500 can comprise more than one base station and/or more than one mobile device, wherein extra base station and/or mobile device can be substantially identical or different with mobile device 550 from hereafter described exemplary base 510.In addition, it is to be appreciated that base station 510 and/or mobile device 550 system that the application can be used to describe and/or method are to promote the radio communication between them.
In base station 510, the business datum of multiple data flow is provided to transmitting (TX) data processor 514 from data source 512.According to an example, each data flow can be sent by respective antenna.TX data processor 514, according to the specific coding scheme selected for business data flow, formats this data flow, encode and interweaves, to provide the data of coding.
OFDM (OFDM) technology can be used to be undertaken multiplexing by the coded data of each data flow and pilot data.In addition, or alternatively, frequency division multiplexing (FDM), time division multiplexing (TDM) or code division multiplexing (CDM) can be carried out to frequency pilot sign.The known data pattern that pilot data normally processes in known manner, and can at mobile device 550 place for estimating channel response.According to the specific modulation scheme selected for each data flow (such as, two-phase PSK (BPSK), quarternary phase-shift keying (QPSK) (QPSK), M phase phase shift keying (M-PSK), M quadrature amplitude modulation (M-QAM) etc.) modulate (such as to the coded data of the pilot tone after multiplexing and each data flow, sign map), to provide modulation symbol.The data transfer rate of each data flow, coding and modulation can be determined by the instruction performed by processor 530 or provide.
The modulation symbol of data flow is provided to TX MIMO processor 520, TX MIMO processor 520 and can processes modulation symbol (such as, for OFDM) further.Subsequently, TX MIMO processor 520 is to N tindividual transmitter (TMTR) 522a to 522t provides N tindividual stream of modulation symbols.In various embodiments, TX MIMO processor 520 applies beam-forming weights to the symbol of data flow and the antenna of this symbol of transmission.
Each transmitter 522 receives and processes each symbol stream, to provide one or more analog signal, and analog signal is regulated (such as, amplification, filtering and up-conversion), to provide the modulation signal being adapted to pass through mimo channel transmission.In addition, respectively from N tindividual antenna port 524a to 524t sends the N of spontaneous emission machine 522a to 522t tindividual modulation signal.
At mobile device 550, the modulation signal sent is by N rindividual antenna port 552a to 552r receives, and the signal received from each antenna 552 is supplied to corresponding receiver (RCVR) 554a to 554r.Each receiver 554 regulates (such as, filtering, amplification and down-conversion) corresponding signal, carries out digitlization to provide sampling, and process sampling further the signal after reconciling, to provide corresponding " reception " symbol stream.
RX data processor 560 is from N rindividual receiver 554 receives N rindividual symbol stream, and according to specific receiver treatment technology to N rindividual receiving symbol flows to row relax, to provide N tindividual " detecting " symbol stream.RX data processor 560 can carry out demodulation, deinterleaving and decoding, to recover the business datum of data flow to each symbol stream that detects.The process undertaken by RX data processor 560 is contrary with the process performed by the TX MIMO processor 520 in base station 510 and TX data processor 514.As described above, processor 570 periodically judges to use which pre-coding matrix.In addition, processor 570 can form the reverse link message comprising matrix index portion and order value part.
Reverse link message can comprise about communication link and/or various types of information of data flow of receiving.Reverse link message is undertaken processing (its business datum also receiving the multiple data flow from data source 536) by TX data processor 538, is modulated, is regulated by transmitter 554a to 554r, and send back base station 510 by modulator 580.
In base station 510, modulation signal from mobile device 550 is received by antenna port 524, is regulated by receiver 522, carries out demodulation by demodulator 540, and processed by RX data processor 542, to extract the reverse link message sent by mobile device 550.In addition, processor 530 processes extracted message, to determine to use which pre-coding matrix to determine beam-forming weights.
Processor 530 and 570 can instruct operation (such as, control, coordinate, manage etc.) respectively in base station 510 and mobile device 550 place.Corresponding processor 530 and 570 is associated with for program code stored and memory 532 and 572 that is data.Processor 530 and 570 can also perform calculating, to derive frequency response estimation and the impulse response estimation of up link and down link respectively.
Fig. 6 shows the system 600 for by adjustment antenna port number carried out neatly Resources allocation consistent with one aspect of the present invention.For example, system 600 can be arranged in base station at least partly.As shown in the figure, system 600 comprises multiple function square frame, the function that these function box indicatings are realized by processor, software or both combinations (such as, firmware).System 600 comprises the logic groups 602 of the electric assembly of collaborative work.Logic groups 604 comprises the electric assembly (such as, adaptation module) for making antenna port number be adaptive to user's request.This logic groups 604 also comprises logic groups 608 and logic groups 609, as described in detail above, logic groups 608 comprises for selecting the electric assembly of antenna port number (such as, select module), logic groups 609 (such as, adjusting module) is for adjusting to system requirements by antenna port number.Such as, logic groups 609 can arrange the transmitting antenna port number run for legacy subscriber equipment (UE), and different transmit antennas port number is arranged to the operation of new-type UE, wherein logic groups 606 (such as, announcement module) can subsequently for the operation of the old-fashioned UE in wireless communication system and the operation of new-type UE be noticed and/or send corresponding antenna port.
In addition, logic groups 606 comprises the electric assembly for noticing antenna port to UE.Like this, base station can in order to the overall Effec-tive Function of considered as a whole wireless system, intelligently balance the demand (such as, the performance boost of new user being considered as the compensation of the hydraulic performance decline to legacy subscriber) of old-fashioned UE and new-type UE (such as, LTE-A).
For example, by first reducing noticed antenna port number, the respective resources that the reference signal (RS) that can be released to legacy subscriber retains, to be used by new-type UE.Therefore, take legacy subscriber as cost, can improve the performance of new user, this can be provided in seamlessly transitting between old-fashioned UE and new-type UE operation in a wireless communication system.
In addition, logic groups 602 comprises memory 610, and memory 610 stores for performing the instruction with electric assembly 604 and 606 functions associated.Although be shown in the outside of memory 610, be understandable that, electric assembly 604 and 606 also may reside within memory 610.
Fig. 7 shows and makes the adaptive system 700 of antenna port number in a wireless communication environment for realizing.System 700 comprise there is receiver 710 and transmitter 724 base station 702 (such as, access point ...), wherein, receiver 710 is by multiple reception antenna 706 from one or more mobile device 704 Received signal strength, and transmitter 724 is sent to one or more mobile device 704 by transmitting antenna 708.Receiver 710 receives information from reception antenna 706, and is operatively associated with demodulator 712, and demodulator 712 carries out demodulation to the information received.Symbol after the processor similar to above-described processor 714 pairs of demodulation is analyzed, processor 714 couples mutually with memory 716, memory 716 stores data that are that will send to mobile device 704 or that receive from mobile device 704, and/or any other suitable information relevant with function to performing the various operation that describes of the application.Processor 714 is also with antenna self-adaptive assembly 718 with notice assembly 720 and couple mutually.As described above, antenna self-adaptive assembly 718 makes base station can intelligently balance old-fashioned UE and new-type UE (such as in order to the overall Effec-tive Function of considered as a whole wireless system, LTE-A) demand (such as, the performance boost of new user being regarded as the compensation of the hydraulic performance decline to legacy subscriber).Noticing assembly 720 can to the determined antenna port of system advertises.
Base station 702 also comprises modulator 722.According to description above, modulator 722 can carry out multiplexing to frame, for the transmission carried out to mobile device 704 by antenna 708 by transmitter 724.Although be illustrated as separating with processor 714, it is to be appreciated that identity notices the part that assembly 718, publishing modes assembly 720 and/or modulator 722 can be processor 714 or multiple processor (not shown).
Fig. 8 shows and the ad hoc approach 800 for making the adaptive related fields of the present invention of antenna port number corresponding in a communication environment.According to method 800, by first reducing 810 the antenna port number noticed, the respective resources that the reference signal (RS) that can be released to legacy subscriber 820 subsequently retains, to be used by new-type UE.Therefore, take legacy subscriber as cost, the performance of new user can be improved, seamlessly transitting between this operation that can be provided in old-fashioned UE and new-type UE in a wireless communication system.
Like this, can not using antenna port as in the part that wireless system runs is advertised to UE, discharge being generally the resource that the reference signal (RS) that is associated with this antenna retains.According to a specific aspect, current mechanism (such as, passing through PBCH in LTE) can be used to notice transmitting antenna port number to old-fashioned UE, and notice the transmitting antenna port of more more number to new-type UE by another kind of mechanism.
Fig. 9 shows mobile device according to a further aspect in the invention.Mobile device 900 comprises receiver 902, for example, receiver 902 is from reception antenna (not shown) Received signal strength, and perform typical operation to the received signal (such as, filtering, amplification, down-conversion etc.), and digitlization is carried out to obtain sampling to the signal after regulating.For example, receiver 902 can be MMSE receiver, and it can comprise demodulator 904, and demodulator 904 can carry out demodulation to the received signal and they is provided to processor 906, for use in channel estimating.According to an example, receiver 902 can obtain noticed signal, and wherein this signal obtains after the mark of base station.Processor 906 can be: be exclusively used in the information analyzed and received by receiver 902 and/or the processor generating the information sent by transmitter 916, for controlling the processor of one or more assemblies of mobile device 900, and/or for both analyzing the information received by receiver 902, generate the information sent by transmitter 916, control again the processor of one or more assemblies of mobile device 900.
Mobile device 900 can also comprise the memory 908 operatively coupled mutually with processor 906, and memory 908 can store the data that will send, the data received and other suitable information relevant with function to performing various operation of the present invention any.Such as, memory 908 can store and analyze the agreement and/or algorithm that obtained signal correction joins, and wherein obtained signal correction realizes self adaptation in making the antenna port number by base station advertises in a wireless communication system.This adaptive characteristic when determining antenna port number makes base station intelligently can balance the demand of old-fashioned UE and new-type UE (such as, LTE-A) in order to the overall Effec-tive Function of considered as a whole wireless system.In addition, memory 908 can store the agreement and/or algorithm that are associated to the performance boost balancing new user with the compensation as the hydraulic performance decline to legacy subscriber.
It is to be appreciated that it can be volatile memory or nonvolatile memory that the data described by the application store (such as, memory 908), or volatibility and nonvolatile memory can be comprised.For illustrative purposes and not as restriction, nonvolatile memory can comprise: read-only memory (ROM), programming ROM (PROM), electrically programmable ROM (EPROM), electrically-erasable PROM (EEPROM) or flash memory.Volatile memory comprises random access memory (RAM), and it can as external cache.In order to illustrate not as restriction, RAM can use in a variety of forms, such as: synchronous random access memory (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate SDRAM (DDR SDRAM), enhancement mode SDRAM (ESDRAM), synchronization link DRAM (SLDRAM) and Direct-type RambusRAM (DRRAM).The memory 908 of native system and method is intended to the memory including, but not limited to these and other suitable type any.Modulator 914 separates with processor 906 although be described as, it is to be appreciated that can be a part for processor 906 or multiple processor (not shown).
Figure 10 shows the example wireless communications 1000 being configured for and supporting multiple user, can realize the various aspects of self adaptation operation within the system.For example, system 1000 provides communication for multiple communities 1002 of such as macrocell 1002a-1002g and so on.Each macrocell 1002a-1002g provides service by corresponding access point 1004 (such as access point 1004a-1004g).Each community 1002a-1002g can also be divided into one or more sector.Various equipment 1006 (comprising equipment 1006a-1006k) is distributed in whole system 1000.Such as, at given time, depend on whether equipment 1006 is whether activation and equipment 1006 are in soft handover, and each equipment 1006 above may communicate with one or more access point 1004 at forward link (FL) and/or reverse link (RL).Wireless communication system 1000 can provide service on large geographic area, and such as, macrocell 1002a-1002g can cover contiguous several blocks, and these macrocells can make in a wireless communication system by the antenna port number self adaptation of base station advertises simultaneously.Like this, the antenna port number self adaptation that system 1000 can make access point notice, and the demand of old-fashioned UE and new-type UE (such as, LTE-A) is intelligently balanced in order to the overall Effec-tive Function of considered as a whole wireless system.Such as, if macrocell determines to reduce the antenna port number noticed, then it can increase the number of resources of the picocell be used in its overlay area.Then to be become for the resource sending its RS by macrocell and can use each picocell.
In another example, the performance boost of new user being regarded as is the compensation of hydraulic performance decline to legacy subscriber.In addition, access point 1004 can determine available subscribers 1006 on wireless system 1000 and its relevant information.These information can be about: the type of user (such as, old-fashioned, LTE-A); The number of users of every type, with the relative position of base station, according to the type of given antenna port number, institute's exchange message, Qos and the performance of every type of expecting; For the reception antenna number etc. of UE.Then according to the information that these are collected, access point 1004 is by (such as, for legacy subscriber) the antenna port number such as calculated or determine to notice via the mode of inference and so on.This inference can also be probabilistic, namely according to calculating the probability distribution of consideration to paid close attention to state of data and event.Inference can also refer to the technology for forming advanced event according to one group of event and/or data.When user enters or leaves wireless network and/or changes when demand, noticed antenna port number can be changed, so that adaptive system demand.Subsequently, the available antenna port number that (such as, paging, circulated a notice of by server) is relevant can be circulated a notice of to user.
Figure 11 is the block diagram in a communications system make antenna port number adaptive system 1100 consistent with the various aspects of the application.In one example, system 1100 comprises one or more base station 1110 and one or more terminal 1140, and these base stations can intercom with 1148 via respective antenna 1118 mutually with terminal.According to the type of user or terminal (such as, old-fashioned, LTE-A), the antenna port number self adaptation be associated with antenna 1148 can be made via antenna self-adaptive assembly 1166.When user enters or leaves wireless network and/or changes when demand, noticed antenna port number can be changed, so that adaptive system demand.Subsequently, the available antenna number that (such as, paging, circulated a notice of by server) is relevant can be circulated a notice of to user.For example, existing mechanism (such as, passing through PBCH in LTE) can be used to notice transmitting antenna port number to old-fashioned UE, and notice larger number of transmit antennas by another kind of mechanism to new-type UE.Although illustrate only a base station 1110 and a terminal 1140 in system 1100, but be understandable that, system 1100 can comprise base station 1110 and/or the terminal 1140 of arbitrary number, and wherein each base station and terminal can use the antenna port 1118 and/or 1148 of any suitable number.
According to an aspect, base station 1110 can send data, control signal and/or other information by mode below.First, the data source 1112 at base station 1110 place generates the information that will send, and/or this information is supplied to one or more terminal 1140.In one example, data source 1112 can with one or more for providing the upper layer application of application data to be associated, with for providing power to control and/or the network controller of schedule information is associated, and/or with for providing other other suitable entity any for the information communicated any to be associated to terminal 1140.In another example, provide information by data source 1112 in the mode of the grouping of a succession of such as PDCP (PDCP) service data unit (SDU) and so on.
Subsequently, receive by launching (Tx) buffer 1114 information that data source 1112 provides, wherein, what Tx buffer 1114 stored is the transmission that transmitter 1116 not yet completes.In one example, the information sent transmitted to terminal 1140 as signal by antenna 1118 by transmitter 1116, this signal is received via antenna 1148 by receiver 1150.Subsequently, the data received at terminal 1140 place are provided to data sink 1152, data sink 1152 can be associated with device controller of the upper layer application at terminal 1140 place, terminal 1140 etc.
In addition, and/or alternatively, terminal 1140 by the mode similar to aforesaid way, usage data source 1142, Tx buffer 1144, transmitter 1146 and antenna 1148 by information transmission to base station 1110.Subsequently, by base station 1110 by the mode similar to the mode described by the antenna 1148 above for terminal 1140, receiver 1150 and data sink 1152, carry out via antenna 1118, receiver 1120 and data sink 1122 information that receiving terminal 1140 sends.In one example, base station 1110 can also make purpose processor 1130 and/or memory 1132, to bear and/or to realize the function of one or more parts of above-mentioned base station.As illustrated further in system 1100, terminal 1140 can make purpose processor 1160 and/or memory 1162 by identical mode.
Figure 12 shows method 1200, starts from the setting to the transmitting antenna port number run for legacy subscriber equipment (UE) in a wireless communication system in 1210 the method.Subsequently, method 1200 proceeds to 1220, arranges the different antennae port number run for new-type UE in a wireless communication system 1220.Next, method 1200 proceeds to 1230, the transmitting antenna port run for old-fashioned UE in 1230 pairs of wireless communication systems and noticing for the antenna port that new-type UE runs.1240, method 1200, via the antenna port corresponding with old-fashioned UE and new-type UE, sends the data of each in old-fashioned UE and new-type UE.
For performing the general processor of function described in the application, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components or its combination in any, can realize or perform in conjunction with various exemplary logic, box, module and the circuit described by the embodiment of the application.General processor can be microprocessor, or processor also can be the processor of any routine, controller, microcontroller or state machine.Also processor may be embodied as the combination of computing equipment, such as, the combination of the combination of DSP and microprocessor, multi-microprocessor, one or more microprocessor and DSP kernel, or other this kind of structure any.In addition, at least one processor can comprise and can be used for the one or more step of execution described by the application and/or one or more modules of operation.
In addition, the method described in conjunction with aspect disclosed in the present application or the step of algorithm and/or operation directly can be presented as hardware, the software module performed by processor or both combinations.Software module can be arranged in the storage medium of RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, mobile disk, CD-ROM or other form any well known in the art.A kind of exemplary storage medium can be coupled to processor, thus enable processor from this read information and to this storage medium written information.Alternatively, storage medium also can be integrated in processor.In addition, in some respects, processor and storage medium can be arranged in ASIC.In addition, ASIC can be arranged in user terminal.Alternatively, processor and storage medium also can be present in user terminal as discrete assembly.In addition, in some respects, the step of invention or algorithm and/or operation can as code and/or instruction one or arbitrarily a combination or set be positioned on machine readable media and/or computer-readable medium, and these codes and/or instruction can be incorporated in computer program.
In one or more exemplary embodiment, described function can be implemented as hardware, software, firmware or above-mentioned any combination.When realizing in software, these functions can be the one or more instruction or code that store on a computer-readable medium or transmit.Computer-readable medium comprises computer-readable storage medium and communication media, and communication media comprises any medium contributing to computer program being sent to another place from a place.Storage medium can be any usable medium that computer can be accessed.Exemplarily instead of restriction, such computer-readable medium can comprise RAM, ROM, EEPROM, CD-ROM or other disk storage, magnetic disc store or other magnetic storage apparatus, or can be used in carrying or store required program code with the form of instruction or data structure and can by other medium any of computer access.And any connection suitably can be called computer-readable medium.For example, if use coaxial cable, fiber optic cables, twisted-pair feeder, digital subscriber line (DSL) or such as infrared, wireless and microwave and so on wireless technology from website, server or other remote source software, then the wireless technology of coaxial cable, fiber optic cables, twisted-pair feeder, DSL or such as infrared, wireless and microwave and so on is also contained in the definition of medium.The disk used in the application and CD comprise: compact disk (CD), laser-optical disk, CD, Digital Versatile Disc (DVD), floppy disc and Blu-ray disc, the wherein usual magnetically copy data of disk, CD then uses laser to carry out copy data optically.Above-mentioned combination also should be included in the scope of computer-readable medium.
Although discussed above is exemplary aspect and/or embodiment, it should be noted, do not depart from claim define described by and/or embodiment scope prerequisite under, various change and amendment can be made.In addition, although the element of described method and/or embodiment is described or requires as singulative, be restricted to odd number unless expressly stated, otherwise also can use plural number.In addition, unless otherwise stated, any aspect and/or all or part of of embodiment can use together with part with any other side and/or the whole of embodiment.

Claims (60)

1. the method used in a wireless communication system, described method comprises:
Arrange in described wireless communication system for transmitting antenna port number that legacy subscriber equipment (UE) runs;
Arrange in described wireless communication system for different transmit antennas port number that new-type UE runs;
Notice in described wireless communication system and be used for the transmitting antenna port that old-fashioned UE runs and the transmitting antenna port run for new-type UE;
Be that old-fashioned and new-type UE launches whole control channel via the transmitting antenna port run for old-fashioned UE; And
Launch the first reference signal via the transmitting antenna port run for old-fashioned UE, and launch the second reference signal via the transmitting antenna port run for new-type UE,
Wherein said first reference signal is launched in whole subframe; And
Wherein said second reference signal is launched in a subset of whole subframe based on sub-frame configuration at least in part.
2. method according to claim 1, wherein said announcement operations occurs via Common Control Channel.
3. method according to claim 1, wherein said announcement operations occurs via the Physical Broadcast Channel (PBCH) in Long Term Evolution (LTE).
4. method according to claim 1, also comprises:
Via to run for old-fashioned UE and the transmitting antenna port of new-type UE operation to send in old-fashioned UE and new-type UE each data respectively.
5. method according to claim 1, the described different transmit antennas port number wherein run for new-type UE is greater than the described transmitting antenna port number run for old-fashioned UE.
6. method according to claim 4, also comprises:
With the peak rate of described old-fashioned UE for cost improves the peak rate of described new-type UE.
7. method according to claim 1, also comprises:
Reduce the antenna port number for old-fashioned UE noticed, to be released to resource that reference signal (RS) retains to for new-type UE.
8. method according to claim 5, also comprises:
According to collection and legacy subscriber number, or new number of users, or user is relative to the position of base station, or the type of user or institute's swap data or the estimated performance of QoS, or the ability of Rx antenna or UE or the relevant information of above-mentioned combination determine antenna port.
9. a radio communication device, comprising:
At least one processor, is configured to:
Arrange in wireless communication system for transmitting antenna port number that legacy subscriber equipment (UE) runs;
Arrange in described wireless communication system for different transmit antennas port number that new-type UE runs;
Notice in described wireless communication system and be used for the transmitting antenna port that old-fashioned UE runs and the transmitting antenna port run for new-type UE;
Be that old-fashioned and new-type UE launches whole control channel via the transmitting antenna port run for old-fashioned UE; And
Launch the first reference signal via the transmitting antenna port run for old-fashioned UE, and launch the second reference signal via the transmitting antenna port run for new-type UE,
Wherein said first reference signal is launched in whole subframe; And
Wherein said second reference signal is launched in a subset of whole subframe based on sub-frame configuration at least in part.
10. radio communication device according to claim 9, at least one processor wherein said is also configured to:
Via to run for described old-fashioned UE and the transmitting antenna port of described new-type UE operation sends respectively for each data in old-fashioned UE and new-type UE.
11. 1 kinds of computer programs, comprise non-transitory computer-readable storage media, and described non-transitory computer-readable storage media comprises:
For the code of the different transmit antennas port number that makes the transmitting antenna port number that runs for legacy subscriber equipment (UE) at least one computer installation wireless communication system and run for new-type UE;
In described wireless communication system, the code of antenna port is noticed for making at least one computer described;
Be the code that old-fashioned and new-type UE launches whole control channel for making at least one computer described via the transmitting antenna port run for old-fashioned UE; And
For making at least one computer described launch the first reference signal via the transmitting antenna port run for old-fashioned UE, and launch the code of the second reference signal via the transmitting antenna port run for new-type UE,
Wherein said first reference signal is launched in whole subframe; And
Wherein said second reference signal is launched in a subset of whole subframe based on sub-frame configuration at least in part.
12. computer programs according to claim 11, wherein said computer-readable recording medium also comprises:
For making at least one computer described via the code sent respectively for the transmitting antenna port that described old-fashioned UE runs and described new-type UE runs for the data of each in old-fashioned UE and new-type UE.
13. 1 kinds of devices, comprising:
For the module of the different transmit antennas port number that arranges the transmitting antenna port number that runs for legacy subscriber equipment (UE) in wireless communication system and run for new-type UE;
For noticing the module of the transmitting antenna port being used for transmitting antenna port that old-fashioned UE runs and run for new-type UE in described wireless communication system;
For via the transmitting antenna port run for old-fashioned UE being the module that old-fashioned and new-type UE launches whole control channel; And
For launching the first reference signal via the transmitting antenna port run for old-fashioned UE, and launch the module of the second reference signal via the transmitting antenna port run for new-type UE,
Wherein said first reference signal is launched in whole subframe; And
Wherein said second reference signal is launched in a subset of whole subframe based on sub-frame configuration at least in part.
14. devices according to claim 13, also comprise:
For sending the module for the data of each in old-fashioned UE and new-type UE respectively via the transmitting antenna port run for described old-fashioned UE operation and described new-type UE.
15. 1 kinds of methods used in a wireless communication system, described method comprises:
Make antenna port number self adaptation, in order to the overall Effec-tive Function of described wireless communication system, intelligently to balance the demand of old-fashioned UE and new-type UE;
Notice in described wireless communication system and be used for the antenna port that old-fashioned UE runs and the antenna port run for new-type UE;
Be that old-fashioned and new-type UE launches whole control channel via the antenna port run for old-fashioned UE; And
Launch the first reference signal via the antenna port run for old-fashioned UE, and launch the second reference signal via the antenna port run for new-type UE,
Wherein said first reference signal is launched in whole subframe; And
Wherein said second reference signal is launched in a subset of whole subframe based on sub-frame configuration at least in part.
16. methods according to claim 15, also comprise:
Be that old-fashioned UE sends data and is that new-type UE sends data via the antenna port run for new-type UE via the antenna port run for described old-fashioned UE.
17. 1 kinds of radio communication devices, comprising:
At least one processor, is configured to:
Make antenna port number self adaptation, so that in order to the overall Effec-tive Function of wireless communication system, intelligently balance the demand of legacy subscriber equipment (UE) and new-type UE;
Notice in described wireless communication system and be used for the antenna port that old-fashioned UE runs and the antenna port run for new-type UE;
Be that old-fashioned and new-type UE launches whole control channel via the antenna port run for old-fashioned UE; And
Launch the first reference signal via the antenna port run for old-fashioned UE, and launch the second reference signal via the antenna port run for new-type UE,
Wherein said first reference signal is launched in whole subframe; And
Wherein said second reference signal is launched in a subset of whole subframe based on sub-frame configuration at least in part.
18. radio communication devices according to claim 17, at least one processor wherein said is also configured to:
Described antenna port is noticed to old-fashioned UE by the Physical Broadcast Channel (PBCH) in Long Term Evolution (LTE).
19. radio communication devices according to claim 17, at least one processor wherein said is also configured to:
Reduce antenna port number, so that the resource that the reference signal (RS) being released to old-fashioned UE retains.
20. radio communication devices according to claim 19, at least one processor wherein said is also configured to:
With described old-fashioned UE for cost improves the performance of new-type UE.
21. radio communication devices according to claim 17, at least one processor wherein said is also configured to:
Available subscribers number is determined according to probabilistic inference.
22. radio communication devices according to claim 21, at least one processor wherein said is also configured to:
Enter according to user or leave described wireless communication system and change antenna port number.
23. radio communication devices according to claim 22, at least one processor wherein said is also configured to:
Available antenna port number is circulated a notice of to described user.
24. radio communication devices according to claim 22, at least one processor wherein said is also configured to:
Collect and legacy subscriber number, or new number of users, or user is relative to the position of base station, or the estimated performance of the type of user or institute's swap data or service quality (QoS), or the ability of Rx antenna or UE or the relevant information of above-mentioned combination.
25. radio communication devices according to claim 22, at least one processor wherein said is also configured to:
Antenna port is noticed to described new-type UE by system information block (SIB).
26. radio communication devices according to claim 17, at least one processor wherein said is also configured to:
Be that old-fashioned UE sends data and is that new-type UE sends data via the antenna port run for new-type UE via the antenna port run for described old-fashioned UE.
27. 1 kinds of devices, comprising:
For making antenna port number self adaptation, so that in order to the overall Effec-tive Function of wireless communication system, intelligently balance the module of the demand of legacy subscriber equipment (UE) and new-type UE;
For noticing the module of the antenna port being used for antenna port that old-fashioned UE runs and run for new-type UE in described wireless communication system;
For being the module that old-fashioned and new-type UE launches whole control channel via the antenna port run for old-fashioned UE; And
For launching the first reference signal via the antenna port run for old-fashioned UE, and launch the module of the second reference signal via the antenna port run for new-type UE,
Wherein said first reference signal is launched in whole subframe; And
Wherein said second reference signal is launched in a subset of whole subframe based on sub-frame configuration at least in part.
28. devices according to claim 27, wherein also comprise for adaptive module:
For selecting the module of antenna port number.
29. devices according to claim 28, wherein also comprise for adaptive module:
For described antenna port number being adjusted to the module of the demand of described wireless communication system.
30. devices according to claim 28, wherein also comprise for adaptive module:
For reducing described antenna port number, so that the module of resource that the reference signal (RS) being released to legacy subscriber retains.
31. devices according to claim 28, wherein also comprise for adaptive module:
For improving the module of the performance of described new-type UE for cost with described old-fashioned UE.
32. devices according to claim 28, wherein also comprise for adaptive module:
For determining the module of available subscribers number according to probabilistic inference.
33. devices according to claim 28, wherein also comprise for adaptive module:
For entering or leave described wireless communication system to change the module of noticed antenna port number according to user.
34. devices according to claim 29, the module wherein for noticing also comprises:
For circulating a notice of the module of available antenna port number to user.
35. devices according to claim 27, also comprise:
For being that old-fashioned UE sends data and is that new-type UE sends the module of data via the antenna port run for new-type UE via the antenna port run for old-fashioned UE.
36. 1 kinds of computer programs, comprise non-transitory computer-readable storage media, and described non-transitory computer-readable storage media comprises:
For making at least one computer make antenna port number self adaptation, so that in order to the overall Effec-tive Function of wireless communication system, intelligently balance the code of the demand of legacy subscriber equipment (UE) and new-type UE;
For the antenna port that makes at least one computer described notice in described wireless communication system to run for old-fashioned UE and the code of antenna port run for new-type UE;
Be the code that old-fashioned and new-type UE launches whole control channel for making at least one computer described via the antenna port run for old-fashioned UE; And
For making at least one computer described launch the first reference signal via the antenna port run for old-fashioned UE, and launch the code of the second reference signal via the antenna port run for new-type UE,
Wherein said first reference signal is launched in whole subframe; And
Wherein said second reference signal is launched in a subset of whole subframe based on sub-frame configuration at least in part.
37. computer programs according to claim 36, wherein said non-transitory computer-readable storage media also comprises for making at least one computer described reduce antenna port number, so that the code of resource that the reference signal (RS) being released to legacy subscriber retains.
38. computer programs according to claim 36, wherein said non-transitory computer-readable storage media also comprises for making at least one computer described with described old-fashioned UE for cost is to improve the code of the performance of described new-type UE.
39. computer programs according to claim 36, wherein said non-transitory computer-readable storage media also comprises the code for making at least one computer described determine available subscribers number according to probabilistic inference.
40. computer programs according to claim 36, wherein said non-transitory computer-readable storage media also comprises for making at least one computer described enter according to user or leaving the code that described wireless communication system changes antenna port number.
41. computer programs according to claim 36, wherein said non-transitory computer-readable storage media also comprises the code for making at least one computer described circulate a notice of available antenna port number to user.
42. computer programs according to claim 36, wherein said non-transitory computer-readable storage media also comprises for making at least one computer described according to collection and legacy subscriber number, or new number of users, or user is relative to the position of base station, or the estimated performance of the type of user or institute's swap data or service quality (QoS), or the information that above-mentioned combination is correlated with is to determine the code of antenna port.
43. computer programs according to claim 36, wherein said non-transitory computer-readable storage media also comprises for making at least one computer described by the code of system information block (SIB) to described new-type UE notice antenna port.
44. computer programs according to claim 36, wherein said computer-readable recording medium also comprises for making at least one computer described be that old-fashioned UE sends data and is the code that new-type UE sends data via the antenna port run for new-type UE via the antenna port run for described old-fashioned UE.
45. 1 kinds, for the method for radio communication, comprising:
Receive about the transmitting antenna port run for legacy subscriber equipment (UE) and the notice of transmitting antenna port run for senior UE in a wireless communication system, described notice is indicated as old-fashioned UE and runs the transmitting antenna port number that arranges and run the different transmit antennas port number arranged for senior UE;
Via whole control channels that the transmitting antenna port accepts run for old-fashioned UE runs for old-fashioned and senior UE; And
Via transmitting antenna port accepts first reference signal run for old-fashioned UE, and via transmitting antenna port accepts second reference signal run for senior UE,
Wherein said first reference signal receives in whole subframe; And
Wherein said second reference signal receives in a subset of whole subframe based on sub-frame configuration at least in part.
46. methods according to claim 45, wherein notice the transmitting antenna port being used for old-fashioned UE and running via broadcast channel.
47. methods according to claim 46, wherein via the transmitting antenna port that the channel announcement being different from described broadcast channel is run for senior UE.
48. methods according to claim 45, wherein said first reference signal is public reference signal (CRS), and described second reference signal is the reference signal be associated with senior Long Term Evolution (LTE-A).
49. 1 kinds of radio communication devices, comprising:
Memory; And
At least one processor, is connected to described memory, is configured to:
Receive about the transmitting antenna port run for legacy subscriber equipment (UE) and the notice of transmitting antenna port run for senior UE, described notice is indicated as old-fashioned UE and runs the transmitting antenna port number that arranges and run the different transmit antennas port number arranged for senior UE;
Via whole control channels that the transmitting antenna port accepts run for old-fashioned UE runs for old-fashioned and senior UE; And
Via transmitting antenna port accepts first reference signal run for old-fashioned UE, and via transmitting antenna port accepts second reference signal run for senior UE,
Wherein said first reference signal receives in whole subframe; And
Wherein said second reference signal receives in a subset of whole subframe based on sub-frame configuration at least in part.
50. devices according to claim 49, wherein notice the transmitting antenna port being used for old-fashioned UE and running via broadcast channel.
51. devices according to claim 50, wherein via the transmitting antenna port that the channel announcement being different from described broadcast channel is run for senior UE.
52. devices according to claim 49, wherein said first reference signal is public reference signal (CRS), and described second reference signal is the reference signal be associated with senior Long Term Evolution (LTE-A).
53. 1 kinds, for the device of radio communication, comprising:
For receiving about the transmitting antenna port run for legacy subscriber equipment (UE) and the module of the notice of transmitting antenna port run for senior UE in a wireless communication system, described notice is indicated as old-fashioned UE and runs the transmitting antenna port number that arranges and run the different transmit antennas port number arranged for senior UE;
For the module of whole control channels run for old-fashioned and senior UE via the transmitting antenna port accepts run for old-fashioned UE; And
For via transmitting antenna port accepts first reference signal run for old-fashioned UE, and via the module of transmitting antenna port accepts second reference signal run for senior UE,
Wherein said first reference signal receives in whole subframe; And
Wherein said second reference signal receives in a subset of whole subframe based on sub-frame configuration at least in part.
54. devices according to claim 53, wherein notice the transmitting antenna port being used for old-fashioned UE and running via broadcast channel.
55. devices according to claim 54, wherein via the transmitting antenna port that the channel announcement being different from described broadcast channel is run for senior UE.
56. devices according to claim 53, wherein said first reference signal is public reference signal (CRS), and described second reference signal is the reference signal be associated with senior Long Term Evolution (LTE-A).
57. 1 kinds of computer programs, comprise non-transitory computer-readable storage media, and described non-transitory computer-readable storage media comprises:
For making at least one computer receive about the transmitting antenna port run for legacy subscriber equipment (UE) and the code of the notice of transmitting antenna port run for senior UE, described notice is indicated as old-fashioned UE and runs the transmitting antenna port number that arranges and run the different transmit antennas port number arranged for senior UE;
The code of the whole control channels run for old-fashioned and senior UE via the transmitting antenna port accepts run for old-fashioned UE for making at least one computer described; And
For making at least one computer described via transmitting antenna port accepts first reference signal run for old-fashioned UE, and via the code of transmitting antenna port accepts second reference signal run for senior UE,
Wherein said first reference signal receives in whole subframe; And
Wherein said second reference signal receives in a subset of whole subframe based on sub-frame configuration at least in part.
58. computer programs according to claim 57, wherein notice the transmitting antenna port being used for old-fashioned UE and running via broadcast channel.
59. computer programs according to claim 58, wherein via the transmitting antenna port that the channel announcement being different from described broadcast channel is run for senior UE.
60. computer programs according to claim 57, wherein said first reference signal is public reference signal (CRS), and described second reference signal is the reference signal be associated with senior Long Term Evolution (LTE-A).
CN201510422887.8A 2008-08-28 2009-08-27 The method and apparatus for keeping the transmit antenna port number of notice adaptive Active CN105025527B (en)

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